A specimen in the shape of a cube 20 mm on each side is being compressed without friction in a die cavity, as shown in Fig. 2.35d, where the width of the groove is 15 mm. Assume that the linearly strain-hardening material has the true stress-true strain curve given by ? = 70 + 30? MPa. Calculate the compressive force required when the height of the specimen is at 3 mm, according to both yield c
Vehicles for lunar construction and exploration work will face conditions unlike anything found on Earth. Furthermore, they will be controlled via remote control. A block diagram of such a vehicle and the control are shown in Figure DP9.7. Select a suitable gain K when T = 0.5 s. The goal is to achieve a fast step response with an overshoot of less than 20%.
riteria.
